docs: def label_rows(self, labels, font_size=15, text_buffer=1.5):
          """Label rows.
  
          Parameters
          ----------
          labels : list of strings
              Labels.
          font_size : number (optional)
              Font size. Default is 15.
          text_buffer : number
              Buffer around text. Default is 1.5.
          """
          for i in range(len(self.subplots)):
              plot = self.subplots[i][-1]
              plot.text(
                  text_buffer,
                  0.5,
                  labels[i],
                  fontsize=font_size,
                  verticalalignment="center",
                  horizontalalignment="center",
              )